Safety razor



s. HENSCHIEN SAFETY RAZOR Oct. 6, 1953 Filed March 15,A 1950 l INVENTDRAGENT Patented ct 6', 1595.3

UNITED sTATEs PATENT OFFICE Application March 15, 1950, Serial N0.149,663 InAi'gentina November 18. 1949 1 claim.

This invention relates to a safety razor.

The main object of the invention is to provide a safety razor capable ofbeing handled with only one hand, both for placing and for removing therazor blade.

A further object is to provide a safety razor of the aforesaid type,wherein the used blade may be ejected by actuating the razor with thesame hand used in holding same, without requiring the use of the otherhand.

A still further object is to provide a safety razor which will notrequire the removal of any part thereof for cleaning purposes, the samehand holding the razor being suflicient to place same ready forcleaning.

Fig. 1 is a longitudinal section of the safety razor on line A-A in Fig.2.

Fig. 2 is a longitudinal section of the same razor on line B-B in Fig.1.

Fig. 3 is aside elevation ofthe blade holding head.

Fig. 4 is a front elevational, partly sectional view.

Fig. 5 is a view similar to Fig. 1, showing the safety razor in aposition ready for receiving a razor blade; and

Fig. 6 is an elevational cross-sectional view taken along the lines C--Cin Fig. 5.

The same reference characters are used to indicate like or correspondingparts or elements throughout the drawings.

With reference to the drawings, the safety razor in accordance with thisinvention com.- prises a blade-holding head A and a handle B. Theblade-.holding head A comprises a base plate a and a securing plate b,between which a razor blade is arranged to be clamped. The securingplate b is of rectangular shape and converging concave-convex incross-section, thereby dening an inner concave face Ill and an outerconvex face l2, and two major edges of said plate being sha1-p due tothe convergence between both faces I0 and i2. A pair of shortcylindrical stems M extend from the inner concave face I0 of said plateb, said stems having rounded free ends and being located so as tocorrespond with the orifices or slots usually formed in the razor bladefor clamping same between plates a and b.

Said securing plate bis mounted on the handle B by means oi acylindrical tubular member `I6 from one of the ends of which a pair ofarms I8 perpendicular thereto and diametrically opposite each other areextended laterally, with the end portions I3 thereof turnedperpendicularly forward with respect to said end of the tubular memberIt so as to form a fork, the free ends of said 2 arms I8 being xed tothe middle portion ofthe side edges of securing plate b, arranged with aconcave face l0 thereof facing the end of said tubular member I6.

The base plate a. is also rectangular-shaped, having the two major sidessuitably toothed so as to form` combs 20, and a convex face 22 againstwhich the razor blade is adapted and a concave face 24 from which thereis projected a tubular nozzle 26 having a cylindrical bore 26 extendingthrough said' plate a to the Covex face thereof, the longitudinal axisof said bore being perpendicular to the axis of symmetry of said plate,coinciding with the center thereof.

.Said tubular member lt is mounted with a slidable adjustment in saidbore 26', the base plate. a being formed with two longitudinal slots 28each extending from one of the side edges thereof to said bore andpartly into .said nozsle .26, as shown in Fig. 2 of the drawings.

The purpose of said slots 28 is to allow the juxtaposition oi theconceveface l!! of the securing plate b against the convex face 22 of. baseplate c. said slots 23 constituting guides for saidk arms I8.Registering with the cylindrical stems I4 on securing plate b, the edgesof said slots 28 are provided with small cylindrical notches 2B'cooperatingly formed on both edges so as to allow the insertion of saidstems in the base plate a, inasmuch as the diameter of said stems islarger than the width of said slots 28.

-In order to prevent the tubular member i6 from projecting outwardly ofthe nozzle 28 in front of the base plate a, the latter is provided witha plug member 30 screwed into the mouth of bore 26 and constituting astop limiting the movements of said tubular member I6 with re spect tonozzle 28, and consequently the movement of securing plate b away fromthe base plate a.

A compression coil spring 32 is arranged within the tubular member I6,between said plug 30 and a cylindrical stem 34 screwed into said tubularmember I8- at the end opposite that facing the plug 39, said cylindricalstem 34 serving to rege ulate the tension of spring 32', for whichpurpose a cylindrical end portion 3A of said stem projects -fromthecorresponding end of tubular mem.- ber 16 said portion illl having asmaller diameter than said stem and having a longitudinal cut 3B.

with the spring 32 inserted between the cylin drical stem 34 adapted tothe t-ubulai7 member I6 and the plug an adapted to the base piate a.' thsecuring plate b will be yieldingly urged against the latter, whereby inorder .to Separate itfrom.

the tubular handle 38 and provided with an annular shoulder 40cooperating with the flange 38 of the tubular handle 38; the purpose ofsaid shoulder 40' is to prevent said button from being forced out ofsaid handle 33 by the action of spring 32, since the tubular member I isyieldingly urged by spring 32 against button 40.

In order to adjust the tension of spring 32 by means of the cylindricalstem 34 without removing the push-button 40, said button is providedwith a blind longitudinal hole 40" open at the inner end thereof andhousing said end portion 34 of stem 34 therein. For the connection withportion 34, said button 40 has a cylindrical cross-piece 42 extendingdiametrically in said hole 40 through the longitudinal cut 36 in saidend portion 34'. Thus, the rotation of button 40 will cause the rotationof cylindrical stem 34, and depending on its direction, said rotationwill increase or reduce the tension of spring 32.

In order to lock said button 40 relative to the tubular handle 38 in anoperative position wherein the end of said tubular handle 38 facing plug30 will engage the latter, said position corresponding to the maximumseparation between base plate a and securing plate b, there is provideda locking means formed by an L-shaped groove 44 in the tubular handle3B, adapted to be engaged by a projection 45 provided on the button 40.

In the embodiment shown, the safety razor is intended to be used withrazor blades of the type shown in Fig. 6 of the drawings. This blade isdesignated with the reference letter C and the non-cutting side edgesthereof are provided with a pair of safety wings |00 the length of whichis smaller than the respective side so as to form a pair of shoulders I0I Inasmuch as the razor blade C should be located laterally between thetwo arms I8 on securing plate b, the distance separating them isslightly greater than the length of the blade, measured between theedges of said safety wings I00. The end portion I8 of said arms I8 areprovided with a lateral enlargement 48 extending in both arms towardsthe same sharp edge of the securing plate b, as may be seen in Figs. 3,4, 5 and 6 of the drawings, said enlargement having a lower edge 48'substantially parallel to the edge I8" of the respective arm I8,provided with an inner ange forming a blade-retaining shoulder 48against which one of the blade shoulders IOI is adapted to abut in aposition wherein the blade holes |02 engaged by the retentioncylindrical stems I4 on plate b remain opposite said stems I4.

As in order to place therazor blade between the plates a and b of the4safety razor head A, it is usually held between the middle finger andthe thumb of the same hand bearing on the edges of the safety wings I00,the edge I8 of each arm I3 is provided with a circular notch 50, so thatin placing the blade C between said plates a and b it may be held untilthe retaining shoulders IOI thereof engage the aforesaid shoulders 48".For

readily positioned between plates a and b.

the same purpose, the securing plate b is provided with two side notches52, each of which extends along the portion of the side edge of saidplate comprised between the edge I8" of the respective arm I8 and thesharp edge of the plate opposite that towards which the arm enlargements4B are directed.

` For the purpose of separating the blade C from the convex face 22 ofbase plate a in order to remove same from the razor head, the portion ofthe arms I8 facing the cylindrical stems I4 on plate b is provided witha pair of blade-pushing stops 54. Each stop 54 is spaced from theopposite stem I4 fo-r a distance larger than the thickness of the razorblade C, whereby it may be It should be noted that in order to separatethe blade from the base plate a, it will be sufcient to make said Lstopsto project slightly from the con- Vex face 22 thereof, said button 40being provided with a removable stop for limiting the separation of saidplates so that said stops 54 will only project for a slight distance.Said removable stop may be constituted by the projection 45 of theaforesaid locking means, which upon pressing said button and notregistering with the corresponding groove 44, will abut against the endof the tubular handle 38.

Coinciding with each of the blade retaining shoulders 48, thecorresponding side edge of base plate a is formed with a notch 5S forthe purpose of allowing the passage of the respective shoulder, so thatplates a and b may be juxtaposed.

In order to mount the razor blade C between plates a and b, theoperation of the safety razor of this invention is as follows: The razoris held with the left hand by the tubular handle 38, between theforeiinger and the thumb, immediately behind the base plate a withpush-button 40 bearing against the palm of the hand. Thus, in movingsaid fingers in the direction thereof, the spring 32 will be compressed,thereby separating plates a. and b from each other. Thereafter, by

taking the razor blade C by the safety wings |00 between the middlefinger and the thumb of the right hand, it is inserted between plates aand b located laterally between the free end portions I 8 of arms ISwhich will act as guides therefor, until it remains with the retainingshoulders IOI bearing on the sholders 48" of securing plate b. By thenmoving the forenger and thumb of the left hand away from the palm of thesame hand,

the antagonistic action acting thereon will be released, whereby thesecuring plate b will be yieldingly pressed against base plate a, withthe razor blade C held firmly therebetween and the safety razor will beready for use.

In order to remove the blade C from the safety razor, the latter is heldwith either hand in the same manner as explained above for placing theblade, but so that the shoulders 48 on securing plate b remain upwardly,whereby upon moving the thumb and foreiinger towards the palm ofv thehand, said plates a and b will separate from each other and the blade Cwill be removed from the base plate a by said stops 54, falling bygravity. While still holding the razor, the tubular handle 33 is thenrotated between the thumb and foreflnger, the button 40 being held fixeddue to the fact that it is pressed against the palm of the hand, untilthe projection 45 of the aforesaid locking means engages the groove 44.This Y will increase the separation between plates a and lb and willcause said stops 54 to project further with respect to the convex face22 of plate a, and a slight rotation of the tubular handle 38 will thenbe sufficient for said projection 45 to remain locked in said groove 44.whereby all the parts forming the razor head A will remain in conditionfor cleaning by means of a water jet.

It is evident that in carrying out this invention, several changes,modifications and/r alterations will occur to those skilled in the art,without departing from the scope of the invention as clearly set forthin the appended claims.

I claim:

A safety razor which comprises a blade-holding head for holding a razorblade, and a tubular handle formed to define a pair of oppositelydisposed longitudinal slots and connected to said head, saidblade-holding head consisting of a base plate having a face for holdingsaid blade, and a securing plate for securing said blade against saidface of said base plate, said plates being parallelly movable to andfrom each other to allow the placing of said razor blade therebetweenwith a movement perpendicular to the movement of said plates, a tubularmember slidably mounted in said tubular handle, having a pair of lateralarms projecting therefrom in opposite direction through saidlongitudinal slots, said base plate being located between said arms,said securing plate being fixed to the ends of said arms, an adjustableplug screwed in the end of said tubular member remote from said baseplate, a compression coil spring mounted within said tubular member andinterposed between said base plate and said plug for adjusting thetension of 'said spring, said securing plate having retention stem meansfor retaining a perforated blade when said plates are pressed oneagainst the other, a push-button for pushing said tubular member againstthe action of said spring mounted at the free end of said handle andcoupled to said plug to rotate the same, locking means for locking saidpush button in operative position against said spring, guides in saidsecuring plate for positioning said razor blade between said plates, andretaining shoulder means adapted to hold said blade correctly positionedbetween said plates.

STENER HENSCHIEN.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 1,847,556 Gaisman Mar. 1, 1932 2,377,388 Testi June 5, 19452,413,877 Lomax Jan. 7, 1947 FOREIGN PATENTS Number Country Date 362,703Great Britain Dec. 10, 1931

